/*
 * Copyright (c) 2017, NVIDIA CORPORATION.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

 #ifndef MANAGED_CUH
 #define MANAGED_CUH
 
 #include <new>
 
 struct managed {
   static void *operator new(size_t n)
   {
     void *ptr          = 0;
     cudaError_t result = cudaMallocManaged(&ptr, n);
     if (cudaSuccess != result || 0 == ptr) throw std::bad_alloc();
     return ptr;
   }
 
   static void operator delete(void *ptr) noexcept
   {
     auto const free_result = cudaFree(ptr);
     assert(free_result == cudaSuccess);
   }
 };
 
 inline bool isPtrManaged(cudaPointerAttributes attr)
 {
 #if CUDART_VERSION >= 10000
   return (attr.type == cudaMemoryTypeManaged);
 #else
   return attr.isManaged;
 #endif
 }
 
 #endif  // MANAGED_CUH